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40 lines
993 B
40 lines
993 B
// keccak.h |
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// 19-Nov-11 Markku-Juhani O. Saarinen <[email protected]> |
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#ifndef KECCAK_H |
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#define KECCAK_H |
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#include <stdint.h> |
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#include <string.h> |
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#ifndef KECCAK_ROUNDS |
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#define KECCAK_ROUNDS 24 |
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#endif |
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#ifndef ROTL64 |
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#define ROTL64(x, y) (((x) << (y)) | ((x) >> (64 - (y)))) |
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#endif |
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// SHA3 Algorithm context. |
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typedef struct KECCAK_CTX |
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{ |
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// 1600 bits algorithm hashing state |
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uint64_t hash[25]; |
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// 1088-bit buffer for leftovers, block size = 136 B for 256-bit keccak |
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uint64_t message[17]; |
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// count of bytes in the message[] buffer |
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size_t rest; |
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} KECCAK_CTX; |
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// compute a keccak hash (md) of given byte length from "in" |
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void keccak(const uint8_t *in, size_t inlen, uint8_t *md, int mdlen); |
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// update the state |
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void keccakf(uint64_t st[25], int norounds); |
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void keccak1600(const uint8_t *in, size_t inlen, uint8_t *md); |
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void keccak_init(KECCAK_CTX * ctx); |
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void keccak_update(KECCAK_CTX * ctx, const uint8_t *in, size_t inlen); |
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void keccak_finish(KECCAK_CTX * ctx, uint8_t *md); |
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#endif
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